[Isocops] IBEX Orbit# 114 ATS - approve

Mark Tapley mtapley at swri.edu
Wed Feb 9 14:36:36 EST 2011


All,
	I have looked at the Orbit 114 ATS v001 
(IBEX_2011_049_00_00_v001.txt) and I approve.

	The standard "PL mode unknown at the beginning" constraint 
violation is the only one.

	The PL commands match the STF v002 file 
(IBEX_2011_049_11_52_v002.stf) per Ken's script (thanks again, Ken!).

	PL ascending operations make sense WRT 15 Re ascending time. 
PL descending operations occur 17 hours early WRT 15 Re descending; 
this is expected, due to the sun-pointing maneuver at the end of 
Orbit 113, and matches the STF.

	Ground station times match S/C times for all 3 contacts. The 
last contact appears to be well into Orbit 115.:

2011-02-26T09:25:42.556Z,15RECrossing,direction:asc,orbit:115

   @ECT_SetRelay stx,on $TIME=2011/02:26:16:43:00


	Battery cell balancing is > 1 hour after burn, but only 13 
minutes after the dump contact. It ends >> 1 hour before anything.

	The sun-pointing maneuver this orbit is back to an inertial 
burn. Ibex_rotate says we are pointing in safe directions at burn 
time, at the following 15 Re ascending, and at the following 15 Re 
descending:

[tapley at ena ~]$ ibex_rotate -o -u 
0.9255716726750616,-0.3474148475029152,-0.15039947631562695 -w 
ibex-sun -t 2011/02:25:18:37:00
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.925572,-0.347415,-0.150399
  which is     R.A. +339.426 Decl.  -8.650
  missing      R.A. +338.384 Decl.  -9.091 (ibex-sun)
  error is     R.A.   +1.042 Decl.  +0.441
  for a total  1.120 deg
[tapley at ena ~]$ ibex_rotate -o -u 
0.9255716726750616,-0.3474148475029152,-0.15039947631562695 -w 
ibex-sun -t 2011-02-26T09:25:42.556Z
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.925572,-0.347415,-0.150399
  which is     R.A. +339.426 Decl.  -8.650
  missing      R.A. +338.995 Decl.  -8.818 (ibex-sun)
  error is     R.A.   +0.432 Decl.  +0.168
  for a total  0.459 deg
[tapley at ena ~]$ ibex_rotate -o -u 
0.9255716726750616,-0.3474148475029152,-0.15039947631562695 -w 
ibex-sun -t 2011-03-05T07:03:31.794Z
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  +0.925572,-0.347415,-0.150399
  which is     R.A. +339.426 Decl.  -8.650
  missing      R.A. +345.444 Decl.  -6.242 (ibex-sun)
  error is     R.A.   +6.017 Decl.  +2.408
  for a total  6.434 deg

	O-mode coming up orbit 115 as well.

At 3:50 -0500 2/9/11, Ibex Mission Operations wrote:
>Guys,
>     Here is the ATS and planning files for Orbit# 114.  Please 
>review/approve them by COB today.
>The ATS will be uploaded during one of the contacts lsted below.
>IBEX,USAK01,ADD,02/10/11,041,08:45:00,02/10/11,041,09:45:00,,LAHO 
>160K IBEX Orbit# 112 SSR_Dump/Tracking Contact
>IBEX,AUWA01,ADD,02/11/11,042,01:45:00,02/11/11,042,02:20:00,,LAHO 
>40K IBEX Orbit# 112 Tracking Contact

-- 
						- Mark     210-379-4635
-----------------------------------------------------------------------
Large Asteroids headed toward planets
inhabited by beings that don't have
technology adequate to stop them:

				Think of it as Evolution in Fast-Forward.



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